Question

Puberty began for Molly when she was 9 years old. Her mother began puberty at 11, and her grandmother at 13. This is an example of a _____ trend. A. cross-sectional

B. sexual
C. physiological
D. secular

Answer 1

The described pattern of earlier puberty onset across generations is known as a secular trend in the context of biological development.

Step-by-step explanation:

The scenario where Molly began puberty at 9 years old, her mother at 11, and her grandmother at 13 is an example of a secular trend. Puberty is the period during which humans become sexually mature, with changes including the maturation of the reproductive system and the development of primary and secondary sexual characteristics. This decreasing age of onset for puberty over generations could be attributed to various factors including genetics, environmental influences, and nutrition.The Correct option is D) Secular.